code drop for postscript configbond
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daniceexi
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257
xCAT/postscripts/configbond
Executable file
257
xCAT/postscripts/configbond
Executable file
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#! /bin/bash
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# IBM(c) 2014 EPL license http://www.eclipse.org/legal/epl-v10.html
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# Usage:
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# configbond bondname nic1@nic2@... [opt1@opt2@...]
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#
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# Description:
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# This script is used to configure bond interface base on the arguments from the
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# command line and the network information from nics and networks tables.
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#
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# This script will create bond interface named <bondname> with 'nic1','nic2'... as slave
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# devices. The bonding options 'opt1','opt2'... will be configured to bond interface.
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#
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# The network information for the bond interface will be gotten from the nics.nicsip and
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# nics.nicnetworks for interface <bondname>. If cannot get for <bondname>, try to
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# search for nic1. If failed too, then nic2 ...
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#
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# It only supports to configure one bond device at each run. If you want to create
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# multiple bond devices, call it multiple times.
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#
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# Note:
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# This script only works for IPv4 so far.
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# Following are examples of variables which are exported from mypostscript. Mostly, we need the nics and
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# networks related varirables which are exported from xcat nics and networks tables.
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# NICIPS=bond0!10.0.0.12
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# NICTYPES=bond0!Ethernet
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# NICHOSTNAMESUFFIXES=bond0!-bond0
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# NICNETWORKS=bond0!10_0_0_0-255_255_255_0
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# NICCUSTOMSCRIPTS=bond0!configbond
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# NETWORKS_LINES=2
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# NETWORKS_LINE1=netname=10_0_0_0-255_255_255_0||net=10.0.0.0||mask=255.255.255.0||mgtifname=eth1||gateway=<xcatmaster>||dhcpserver=||tftpserver=10.0.0.10||nameservers=||ntpservers=||logservers=||dynamicrange=||staticrange=||staticrangeincrement=||nodehostname=||ddnsdomain=||vlanid=||domain=||disable=||comments=
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# NETWORKS_LINE2=netname=10_0_2_0-255_255_255_0||net=10.0.2.0||mask=255.255.255.0||mgtifname=eth0||gateway=10.0.2.2||dhcpserver=||tftpserver=10.0.2.15||nameservers=||ntpservers=||logservers=||dynamicrange=||staticrange=||staticrangeincrement=||nodehostname=||ddnsdomain=||vlanid=||domain=||disable=||comments=
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# locd library for network caculation
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str_dir_name=`dirname $0`
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. $str_dir_name/xcatlib.sh
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# Subroutine to display message and pass it to syslog
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# Usage: showmsg "message to putput" ["error"]
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function showmsg() {
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msg="configbond: $1"
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error=$2
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if [ -n "$error" ]; then
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$(logger -t xcat -p local4.err $msg)
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else
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$(logger -t xcat -p local4.info $msg)
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fi
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echo $msg
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}
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# Check OS version and get the directory of network configuration file
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str_bond_name=''
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str_os_type=`uname | tr 'A-Z' 'a-z'`
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str_cfg_dir=''
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str_temp=''
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if [ "$str_os_type" = "linux" ];then
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str_temp=`echo $OSVER | grep -E '(sles|suse)'`
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if [ -f "/etc/redhat-release" ];then
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str_os_type="redhat"
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str_cfg_dir="/etc/sysconfig/network-scripts"
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elif [ -f "/etc/SuSE-release" -o -n "$str_temp" ];then
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str_os_type="sles"
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str_cfg_dir="/etc/sysconfig/network"
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else
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showmsg "Only supports RHEL and SLES" "error"
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exit -1
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fi
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else
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showmsg "Does NOT support non-Linux Operating System" "error"
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exit -1
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fi
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# Parse arguments
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old_ifs=$IFS
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IFS=$'@'
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if [ $# -eq 2 ];then
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array_bond_opts="mode=4 miimon=100 downdelay=0 updelay=0 lacp_rate=fast xmit_hash_policy=1"
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elif [ $# -eq 3 ]; then
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array_bond_opts=($3)
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else
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showmsg "Only supports 2 or 3 arguments. Usage: configbond bondname nic1@nic2@... [opt1@opt2@...]"
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exit -1
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fi
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str_bond_name=$1
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array_bond_slaves=($2)
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IFS=$old_ifs
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# examples of variables
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# str_bond_name=bond0
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# array_bond_slaves=(eth1 eth2)
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# array_bond_opts=(mode=1 miimon=100)
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# Check the existence of slave devices and remove the inactive ones
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realdevs=$(ip addr show 2>&1 | grep -E '^[1-9]' | cut -d: -f2)
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for slave in ${array_bond_slaves[*]}; do
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active=0
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for rdev in $realdevs; do
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if [ $rdev = $slave ]; then
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active=1
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fi
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done
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if [ $active -eq 0 ]; then
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showmsg "Warning: device $slave does not exist. It will not be configured as a slave device."
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# remove the device from slave list
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allslaves=${array_bond_slaves[*]}
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allslaves=${allslaves/$slave/}
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array_bond_slaves=($allslaves)
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fi
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done
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if [ ${#array_bond_slaves[*]} -eq 0 ]; then
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showmsg "No available slave devices to use." "error"
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exit -1
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fi
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showmsg "Create bond interface $str_bond_name with slaves=\"${array_bond_slaves[*]}\" opts=\"${array_bond_opts[*]}\""
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# Get bond device's IP address
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str_bond_ip=""
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if [ -z "$NICIPS" ]; then
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showmsg "Failed to get IP for bond interface: $str_bond_name. No IP is set in nics.nicips table."
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exit 1
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else
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for devname in $str_bond_name ${array_bond_slaves[*]}; do # for each "bondname nic1 nic2 ..."
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for ifipinfo in ${NICIPS//,/ }; do # for each "ifname!ifip"
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old_ifs=$IFS
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IFS=$'!'
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arrayifinfo=($ifipinfo) # [0] - ifname; [1] - if ip address
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IFS=$old_ifs
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if [ "$devname" = "${arrayifinfo[0]}" ]; then
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str_bond_ip=${arrayifinfo[1]}
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break 2
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fi
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done
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done
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fi
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# remove the left part from |. that means only keeping the first ip in the interface if there are alias ip
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str_bond_ip=${str_bond_ip%%|*}
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if [ -z "str_bond_ip" ]; then
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showmsg "Failed to get IP for $str_bond_name ${array_bond_slaves[*]} from $NICIPS"
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exit 1
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fi
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# Get the network and netmask info for the $str_bond_ip from networks table
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str_bond_net=
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str_bond_mask=
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num_i=1
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while [ $num_i -le $NETWORKS_LINES ];do
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eval str_bond_network=\$NETWORKS_LINE$num_i
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str_temp_net=${str_bond_network#*net=} # remove the left part from 'net='
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str_temp_net=${str_temp_net%%|*} # remove the right part from first '|'
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str_temp_mask=${str_bond_network#*mask=} # remove the left part from 'mask='
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str_temp_mask=${str_temp_mask%%|*} # remove the right part from first '|'
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str_temp_net1=$(v4calcnet $str_bond_ip $str_temp_mask)
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str_temp_net2=$(v4calcnet $str_temp_net $str_temp_mask)
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if [ "$str_temp_net1" = "$str_temp_net2" ];then
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str_bond_net=$str_temp_net
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str_bond_mask=$str_temp_mask
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break
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fi
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num_i=$((num_i+1))
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done
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if [ -z "$str_bond_net" ] || [ -z "$str_bond_mask" ]; then
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showmsg "Cannot find network information for bond IP $str_bond_ip from networks table." "error"
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exit 1
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fi
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showmsg "IP information for $str_bond_name: IP=$str_bond_ip; network=$str_bond_net; netmask=$str_bond_mask"
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# Create bond config file
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str_master_file="${str_cfg_dir}/ifcfg-${str_bond_name}"
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if [ "$str_os_type" = "redhat" ];then
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# Create the master file
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cat > $str_master_file <<EOF
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DEVICE=${str_bond_name}
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BOOTPROTO=none
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IPADDR=${str_bond_ip}
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NETMASK=${str_bond_mask}
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ONBOOT=yes
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USERCTL=no
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BONDING_OPTS="${array_bond_opts[*]}"
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EOF
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# Create the slave files
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for slave in ${array_bond_slaves[*]}; do
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str_slave_file="${str_cfg_dir}/ifcfg-${slave}"
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cat > $str_slave_file <<EOF
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DEVICE=${slave}
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MASTER=${str_bond_name}
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SLAVE=yes
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BOOTPROTO=none
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ONBOOT=yes
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USERCTL=no
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EOF
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done
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elif [ "$str_os_type" = "sles" ];then
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# Create the master file
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cat > $str_master_file <<EOF
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NAME='Bonded Interface'
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BOOTPROTO=static
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BONDING_MASTER=yes
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IPADDR=${str_bond_ip}
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NETMASK=${str_bond_mask}
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STARTMODE=onboot
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USERCONTROL=no
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BONDING_MODULE_OPTS="${array_bond_opts[*]}"
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EOF
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# Create the slave entries and files
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num_index=0
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for slave in ${array_bond_slaves[*]}; do
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# this is a special part to inject each slave device to master cfg
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echo "BONDING_SLAVE_${num_index}=$slave" >> $str_master_file
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num_index=$((num_index+1))
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str_slave_file="${str_cfg_dir}/ifcfg-${slave}"
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echo "BOOTPROTO=none" > $str_slave_file
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echo "STARTMODE=hotplug" >> $str_slave_file
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done
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fi
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# add bonding driver alias for <bondname>
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echo "alias $str_bond_name bonding" > /etc/modprobe.d/$str_bond_name.conf
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# Bring down the salve devices first
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for slave in ${array_bond_slaves[*]}; do
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$(ifdown $slave &>/dev/null)
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done
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# Bring up bond device
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$(ifup ${str_bond_name} &>/dev/null)
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if [ $? -ne 0 ]; then
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showmsg "Failed to bring up $str_bond_name" "error"
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exit 1
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fi
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showmsg "Finished the configuration for bond interface $str_bond_name"
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exit 0
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